// If the JENA_TDB_DIR is given, then use the JenaTbd implementation.
//
String jenaTdbDir = OntConfig.Prop.JENA_TDB_DIR.getValue();
boolean useJenaTdb = jenaTdbDir != null && jenaTdbDir.trim().length() > 0;
if ( useJenaTdb ) {
return new JenaTbdTripleStore(_db);
}
//
// Otherwise, use the memory based implementation.
//